# My First RIG GTX 1080TI (PSU QUESTION)

**URL:** <https://forum.zcashcommunity.com/t/my-first-rig-gtx-1080ti-psu-question/23400>\
**Category:** Mining\
**Created:** [November 22, 2017, 9:57pm UTC](https://forum.zcashcommunity.com/t/my-first-rig-gtx-1080ti-psu-question/23400 "2017-11-22T21:57:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![alirezajalilii](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/alirezajalilii/32/7600_2.png) [@alirezajalilii](https://forum.zcashcommunity.com/u/alirezajalilii)\
**Post date:** [November 22, 2017, 9:57pm UTC](https://forum.zcashcommunity.com/t/my-first-rig-gtx-1080ti-psu-question/23400/1 "2017-11-22T21:57:55Z")

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Hi, I need Some Help For PSU of my Rig with MB “Asrock H110 Pro BTC+”🤩

As You Know, This MB have 13 GPU Slot, i have bought 6 MSI GTX1080Ti Armor ,Pentium G3900 CPU , 4 GB Ram , 128 GB SSD … and the risers,  
( Consider That i will add 7 AMD Vega 56 or 64 Later On This RIG )

but i dont know what PSU I need To…:thinking:

what if i change my mind and make this rig a 13 1080Ti… What PSU i should but for that?:thinking::thinking:

Also if you can… please Give me a Master Answer… how can i calculate PSU For Next Rigs…? i think the PSU Calculation is The Hardest Ste 😑

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**Author:** ![Sprucemoose](https://avatars.discourse-cdn.com/v4/letter/s/7bcc69/32.png) [@Sprucemoose](https://forum.zcashcommunity.com/u/Sprucemoose)\
**Post date:** [November 23, 2017, 9:34am UTC](https://forum.zcashcommunity.com/t/my-first-rig-gtx-1080ti-psu-question/23400/2 "2017-11-23T09:34:55Z")

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My 1080Ti cards are clocked between 80-90% power to run at roughly 225W each. In order to power 13 of these cards you need an electrical system and PSUs capable of delivering 3kW + whatever the system needs. If you want to run everything at stock power (roughly 250-275W per card) you’ll need even more. Also be aware that some 1080Ti cards uses 2x 8-pin connectors per card, while other uses 6+8 pin. You have to make sure that the PSUs you get have enough connectors.

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**Author:** ![Dartmouth](https://avatars.discourse-cdn.com/v4/letter/d/85e7bf/32.png) [@Dartmouth](https://forum.zcashcommunity.com/u/Dartmouth)\
**Post date:** [November 23, 2017, 12:27pm UTC](https://forum.zcashcommunity.com/t/my-first-rig-gtx-1080ti-psu-question/23400/3 "2017-11-23T12:27:14Z")

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You’ll need more than one PSU, so make sure you know how to mix them properly.  
I’ve got a B250 Mining Expert MB, which makes using multiple PSUs relatively easy.